<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>特殊值</title>
    <script>
        console.log(Number.MAX_VALUE*2);  //输出结果:Infinity
        console.log(-Number.MAX_VALUE*2); //输出结果:-Infinity
        console.log('abc'-100); //输出结果：NaN
        console.log(isNaN(12)); //输出结果：false;
        console.log(isNaN('abc')); //输出结果true；
    </script>
</head>
<body>

</body>
</html>